Sn ap2024 01 (#1114)

* Create syslog_script.js

Fix script to identify TOP 'N' number of records by 'Source' name in any specific duration to optimize and maintain log table health

* Create readme.md

This file will detail you the fix script

Author: bird-03

Fix scripts/Syslog_top10Contributors/readme.md

@@ -0,0 +1,5 @@
+Log[syslog] table Optimization Script ( Server Side)
+ - This fix script will execute on syslog table to identify top '10' contributors in last '15 minutes'. 
+ - This can be altered as per requirement to idenitfy daily top contributors to take action on unnecessary log contibutors
+ - This will help to maintain the health of log table and reduce load
+ - It will ultimately contribute to your instance performance and reviewing the transaction occured 

Fix scripts/Syslog_top10Contributors/syslog_script.js

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+/* Create a GlideAggregate on the Syslog table to identify the Top 10 contributors by 'Source name' and 'Number of occurrences on 'Daily' or'any specific interval'.
+
+This could be vital to maintain the instance performance by regualar optimizing the Syslog table by identifying the top contributors. Based on this syslog table 
+Could it be reviewed by owners to make the correct decisions on whether logging is required for these tables?
+
+*/
+
+topN('syslog', 'source', 10);          //Create a function to identify top 'N' number of records by source. Eg. 10 
+
+function topN(pTable, pColumn, pCount) {
+    var ga = new GlideAggregate(pTable);    // query on table required
+    ga.addAggregate('COUNT', pColumn);      // Count the number of records by source to record how many times it generated log
+    ga.orderByAggregate('COUNT', pColumn);  
+    ga.addEncodedQuery('sys_created_onONLast 15 minutes@javascript:gs.beginningOfLast15Minutes()@javascript:gs.endOfLast15Minutes()'); //query for last 15min data
+    ga.query();
+    var i = 0;
+    var stdout = [];
+    stdout.push('\nTop ' + pCount + ' ' + pColumn + ' values from ' + pTable + '\n');
+    while (ga.next() && (i++ < pCount)) {
+        stdout.push(ga.getValue(pColumn) + ' ' + ga.getAggregate('COUNT', pColumn));
+    }
+    gs.print(stdout.join("\n"));         // display data by 'Sourve' and Number of occurance count 
+}